HST-471, SEN-471 - Sony Audio Service Manual (repair manual). Page 6

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Procedure:
1.

Mode:  Record

2.

Mode:  Playback

Confirm playback the signal recorded in step 1 become adjustable
limits as follows.
If these levels do not adjustable limits, adjustment the RV341 (L-
CH) and RV441 (R-CH) on the AUDIO board to repeat steps 1 and 2.
Adjustable limits: Playback output of 315 Hz to playback output

of 10 kHz:  ±0.5 dB

Adjustment Location: AUDIO and main boards

Record Level Adjustment   DECK B
Procedure:
1.

Mode:  Record

2.

Mode:  Playback

Confirm playback the signal recorded in step 1 become adjustable
limits as follows.
If these levels do not adjustable limits, adjustment the RV511 (L-
CH) and RV521 (R-CH) on the main board to repeat steps 1 and 2.
Adjustable limits:

CN207 PB level:  47.3 to 53.1 mV (–24.3 to –23.3 dB)

Adjustment Location:  main board

 (Component Side)

(Conductor Side)

attenuator

set

CD IN connector (L: L-CH)

(R: R-CH)

1) 315 Hz
2) 10 kHz

50 mV (–23.8 dB)







600 

Ω

blank tape
CS-123

AF OSC

rear panel

+
–

set

recorded
portion

level meter

rear panel

VIDEO1
AUDIO OUT connector
(L: L-CH)
(R: R-CH)

set

CD IN connector (L: L-CH)

(R: R-CH)

315 Hz, 50 mV (–23.8 dB)

blank tape
CS-123

600 

Ω

attenuator

AF OSC

rear panel

+
–

set

recorded
portion

level meter

rear panel

VIDEO1
AUDIO OUT connector
(L: L-CH)
(R: R-CH)

IC303

IC501

J301

J302

RV511

RV521

CN317

CN321

CN361

CN363

RV301
RV401

L
R

PB LEVEL

— DECK B —

— DECK A —

(NORMAL)

RV651

(HIGH)

RV652

PB

LEVEL

RV311

RV411

R

L

TAPE SPEED

R

L

RECORD

BAIS

RV441 RV341